1、下载软件包

https://www.zend.com/downloads/zend-guard-loader

二、上传到服务器中并mv到php目录中

cp opcache.so /usr/local/php5.6/lib/
cp ZendGuardLoader.so /usr/local/php5.6/lib/

vim   php.ini

#在末尾加入

[Zend Guard]
zend_extension=/usr/local/php/lib/ZendGuardLoader.so
zend_extension=/usr/local/php/lib/opcache.so
zend_loader.enable=1
zend_loader.disable_licensing=0
zend_loader.obfuscation_level_support=3
zend_loader.license_path=
----

[root@192 lib]# /usr/local/php5.6/sbin/php-fpm -v
PHP 5.6.34 (fpm-fcgi) (built: Nov 20 2019 09:00:23)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend Guard Loader v3.3, Copyright (c) 1998-2015, by Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies
成功；